openpgp: Explicitly implement PartialEq, Hash for packets.

  - We explicitly exclude the common fields.

  - See #92.

1 files changed, 19 insertions, 1 deletions

diff --git a/openpgp/src/packet/pkesk.rs b/openpgp/src/packet/pkesk.rs
index db88c215..5b2a9ae9 100644
--- a/openpgp/src/packet/pkesk.rs
+++ b/openpgp/src/packet/pkesk.rs
@@ -28,7 +28,7 @@ use crate::packet;
 /// [Section 5.1 of RFC 4880] for details.
 ///
 ///   [Section 5.1 of RFC 4880]: https://tools.ietf.org/html/rfc4880#section-5.1
-#[derive(PartialEq, Eq, Hash, Clone, Debug)]
+#[derive(Clone, Debug)]
 pub struct PKESK3 {
     /// CTB header fields.
     pub(crate) common: packet::Common,
@@ -40,6 +40,24 @@ pub struct PKESK3 {
     esk: Ciphertext,
 }
 
+impl PartialEq for PKESK3 {
+    fn eq(&self, other: &PKESK3) -> bool {
+        self.recipient == other.recipient
+            && self.pk_algo == other.pk_algo
+            && self.esk == other.esk
+    }
+}
+
+impl Eq for PKESK3 {}
+
+impl std::hash::Hash for PKESK3 {
+    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+        std::hash::Hash::hash(&self.recipient, state);
+        std::hash::Hash::hash(&self.pk_algo, state);
+        std::hash::Hash::hash(&self.esk, state);
+    }
+}
+
 impl PKESK3 {
     /// Creates a new PKESK3 packet.
     pub fn new(recipient: KeyID, pk_algo: PublicKeyAlgorithm,